Fire Emblem: Seisen no Keifu, AKA Genealogy of the Holy war, AKA FE4
2600 words. Contains spoilers for the entire game.
Early in FE4, I recruit a silvery Shaman named Deirdre. She's quite powerful: her light magic can kill a lot of enemy units in one shot, and she boasts the highest Res (magic resistance) stat of any character in the game. I haven’t fought any magic-using enemies yet, but that’s about to change as shortly after Deirdre joins I face Sandima, a dark priest whose appearance marks the debut of the Lopt Sect, an evil cult that orchestrates the central conflict of FE4 from the shadows and would eventually take center stage in the story. The raw power of Sandima’s dark magic promises to cut through my knights like butter, and with the long-range dark magic Fenrir in tow, he’s impossible to approach without risking the death of an allied unit. It’s Deirdre that saves the day. Although she uses her Silence staff to render him powerless instead of absorbing the damage with her high Res, Deirdre’s role as a defeater of mages, especially dark mages, sets the stage thematically for the whole game.